package com.scy.config;


import com.scy.entity.Configuration;
import com.scy.entity.MappedStatement;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;

import java.io.InputStream;
import java.util.List;

public class XMLMapperBuilder {

    private Configuration configuration;

    public XMLMapperBuilder(Configuration configuration) {
        this.configuration =configuration;
    }

    public void parse(InputStream inputStream) throws DocumentException {
        Document document = new SAXReader().read(inputStream); Element rootElement = document.getRootElement();
        String[] nodes = {"//select","//insert","//update","//delete"};
        for (int i = 0; i < nodes.length; i++) {
            List<Element> selectList = rootElement.selectNodes(nodes[i]);
            String namespace = rootElement.attributeValue("namespace");
            for (Element element : selectList) {
                String id = element.attributeValue("id");
                String paramterType = element.attributeValue("paramterType");
                String resultType = element.attributeValue("resultType");
                String sql = element.getTextTrim();
                MappedStatement mappedStatement = new MappedStatement();
                mappedStatement.setId(id);
                mappedStatement.setParamterType(paramterType);
                mappedStatement.setResultType(resultType);
                mappedStatement.setSql(sql);
                String key = namespace+"."+id;
                configuration.getMap().put(key,mappedStatement);
            }
        }
    }


}
